Crank-handle



G. F. GRAHAM AND W. J. BUNY AN.

CRANK HANDLE.

APPLICATION FILED APR.28, I919.

1,330,260. Patented Feb. 10,1920.

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1 .g M 8 #17 I ImU nnrr srar rennin nr GEORGE F. GRAHAM AND WILLIAM J'.BUN'YAN, F CLEVELAND, OHIO, ASSIGNORS TO THE BUNTZAN MANUFACTURINGCOMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

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Specification of Letters'latent. I Patgnfed Feb, 10, 1920.

Application filed April 28, 1919. Serial No. 293,107.

2" 0 all whom it may concern:

Be it knownthat we, GEORGE F. GRAHAM and WILLIAM J. BUNYAN, citizens ofthe United States, residing at Cleveland, in the county of Cuyahoga andState of Ohio, have invented a certain new and useful Improvement inCrank-Handles, of which the following is a full, clear, and exactdescript on, reference being bad to the accompanying drawings.

This invention relates to foldable handles,

'and has for its general object to provide a simple and efficient formof the same. A further object of this invention'is to provide a handleof this character which will possess sufficient rigidity when in itsunfolded or operative condit on to enable it to perform its functionswith satisfaction and which, when not in use, may be put into a positionsubstantially parallel with the arm or other object with whicheit isassociated, whereby a saving in space is accomplished and llability toinjury is avoided.

We accomplish the foregoing objects in and through the construction andarrangement of parts shown in the drawings forming part hereof, whereinFigure 1 represents a view, partly in section and partly in elevation,of a handle constructed in accord-i ance with Our invention, the armwith which the handle cooperates being shown in elevation; Fig. 2, aview similar to Fig. 1 showing the handle in its folded position; andFig. 3, a sectional view corresponding to the line 3-8 of Fig. l.

Describing the various parts herein by reference characters, 1 denotesthe object to which the handle is attached, said object being shown as alever arm, such as is employed for the purpose of cranking an automobile. This arm is provided with a threaded bore 2 for the reception ofthe threaded end 3 of the rigid shank section 4 of our handle. shanksection is shown as projecting be yond the arm 1 and is provided with anut 5.

I The opposite end of this shank section is slotted to provide a pair oflugs or forks 6, the outer ends of these lugs being curved, preferablyon the arc of a circle described from the center of a bore 7 extendingtransversely of said lugs or forks. V

8 denotes the movable member or section of the handle shank, the section8 having a' central lug 9 projecting between the forks The threaded endof this or lugs S and ,pivotally connected thereto, 7

as by means of a pin or bolt 10 extending through the bore 7 and througha bore in the ping member of the handle, indicated at 12.

This member is of the usual shape and is provided with a central bore 13adapted to receive the member 4 and a portion ofthe member 8therewithin. This, bore merges with an enlarged bore 14 in the outerportion of the member 12', the outer end of the bore being threaded, asindicated at 15, for-the reception ofthe externally threaded portion 16of a plug 17 the said plug being shown as provided witha head 17'adapted to constitute the outer end of the member 12 and having a slot18 for the application of a screw driver. The inner face ofthe plug 17is concave, as shown at 19, thereby to provide a chamber for the head 20of a screw which is threaded into the outer end of the shank member, 8,thereby to clamp a washer 21 against such end. A helical spring 22surrounds the outer shank member 8, bearing at one end against the innerend of the It will be noted that the rigid member 4 Y of the shankprojects a considerable distance from the arm 1; this insures amplerigidity in the shank to enable the said arm to be turned, as in theoperation of cranking an automobile. By pulling outwardly upon thegripping member 12, the latter may be moved, against the compression ofthe s rino' 22 to a osition where its inner end will clear the ends ofthe lugs or forks 6, as indicated in dotted lines onFig. 1. outer shankmember 8' and the handle may then be pivoted upwardly upon the shankmember 4, and the spring 22 will retain the handle member 12substantially parallel with the arm 1, its inner or bottom endthen beingseated upon the member 4, as

also indicated by dotted lines in Fig. 1.

1n the case of a crank for an automobile, the crank or lever arm 1 .andthe handle may then be placed in a tool box, or under the seat, and willoccupy a minimum amount of room. In'the case of a crank,

The

wvhich it is associated, it being equally well adapted for use withobjects such as hand wheelsand levers ofvar ous kinds.

'Having thus described our intention what we claim is e 1. Thecombination, with an arm, of a shank member connected thereto, a secondshank member pivotally connected to the first mentioned member, agripping member slidably mounted upon the first two members, andyielding means, tending to hold thelast mentioned member upon both ofthe first mentioned members.

2. The combination, with an arm, of a shankmember rigidly connectedthereto, a second shank member pivotally connected to the first member,a gripping member mounted upon both of the first mentioned members, andaspring surrounding the second memberan'd engaging the gripping memberand the second member, thereby to force the gripping member toward saidarm.

' 3. The combination, with an arm, of a shank member rigidly connectedthereto, a second shank member pivotally connected to the first-n1emberand having an abutment adjacentto its outer end, a gripping memberhaving a bore adapted to receive the first mentioned member and aportion of the'second member, the said bore being enlarged toward theouter end of said gripping member, and a spring in the enlarged portionof said bore and bearing at one end against the inner end of saidportion and at the outer end against said abutment.

t. Th combination, withan arm, of a shank member rigidly connectedthereto, a second shank member pivotally connected to the first memberand having an abutment adjacent to its outer end, a washer on the outerend of the second member, a screw se-.

curing said washer to said second member, a gripping member having abore the inner portion whereof is adapted to receive the first mentionedmember and a portion of the second member, the said bore being enlargedtoward the outer portion of the gripping nrember, aspring in theenlarged portion of said bore and surrounding the second member andbearing at one end against said washer and at its other end against theinner end or the enlarged portion of the bore, and a plug closing theouter end of said gripping member and having a chamber for the receptionof said screw.

In testimony whereof, we hereunto aifix our signatures.

GEORGE r. GRAHAM. WILLIAM J. BUNYAN;

